Look, nobody actually enjoys a Monday in January. It's usually that weird, grey limbo where the holiday lights are coming down and your coffee goes cold in four minutes flat. But honestly, if you're looking at the weather in philadelphia on monday, January 19, 2026, things are actually looking surprisingly decent.
Well, "decent" for Philly in the dead of winter.
What’s the vibe outside?
Basically, you can leave the umbrella in the bin. The forecast is calling for a strictly sunny day. No sleet, no weird wintry mix, and definitely no heavy snowfall to ruin your commute or your morning run along the Schuylkill.
It’s going to be bright. Like, "squinting while walking down Broad Street" bright.
The high is hitting 36°F. That’s basically the standard "puffy coat" threshold. You've probably felt worse. It’s that crisp, dry cold that makes your nose tingle but doesn't necessarily soak through your boots.
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The Wind Factor
Here’s the thing most people forget to check: the wind. You can have a sunny day, but if the wind is whipping off the Delaware, it’s a whole different story.
On Monday, we're looking at a southwest wind at 16 mph.
- It’s not a gale, but it’s enough to notice.
- The "feels like" temperature is going to be significantly lower than that 36-degree mark.
- Southwest winds usually mean slightly less "arctic bite" than a straight northern blast, but don't get too comfortable.
If you’re waiting for the Septa or walking to Reading Terminal for lunch, that breeze is going to find every gap in your scarf. Secure your hats. Seriously.
Nighttime: The Deep Freeze
Once the sun dips, the temperature is going to crater. We are talking a low of 15°F.
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That is a 21-degree drop from the daytime high.
If you have plans in Fishtown or Passyunk on Monday night, the sky will be clear, which is pretty, but it also means there are no clouds to trap the heat. It’s going to be frigid. If you’re a homeowner, maybe keep those cabinet doors open under the sink if your pipes are finicky. Better safe than dealing with a literal ice rink in your kitchen.
The Stats You Actually Need
| Metric | Measurement |
|---|---|
| High Temp | 36°F |
| Low Temp | 15°F |
| Precipitation | 0% |
| Humidity | 45% |
| UV Index | 2 |
A UV index of 2 is pretty low, but with the sun out all day, it’s still worth wearing some moisturizer with SPF if you’re spending the afternoon outside. The air is going to be dry, too—45% humidity is definitely "itchy skin" territory.
Why this Monday matters
Monday, Jan 19, is also Martin Luther King Jr. Day. For a lot of people in the city, this is a day of service or a long weekend. The good news is that the weather in philadelphia on monday is cooperating for outdoor events. Whether you’re headed to the Museum of the American Revolution or participating in the Greater Philadelphia MLK Day of Service, you won’t be battling rain or snow.
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It's just cold.
Survival Tips for Monday
Don't overthink it, but don't under-dress. Layering is the only way to survive a Philly January.
Start with a base layer that wicks moisture, add a heavy sweater, and finish with a windbreaker or a wool coat to block that 16 mph southwest wind. Since the humidity is low, stay hydrated. Your skin and your throat will thank you.
If you’re driving, the roads should be dry, which is a rare gift this time of year. No black ice concerns during the day, though with a low of 15°F, anything that might have stayed wet from the weekend will be solid rock by Tuesday morning.
Plan your outdoor activities between 11:00 AM and 3:00 PM. That’s your window for the "warmest" part of the day before the sunset sends the mercury into a tailspin.
Grab some gloves, hit the Rothman Rink at Dilworth Park if you’re feeling adventurous, and enjoy the rare winter sun. It’s going to be a cold one, but at least it’s a bright one.